Kiwi

Japanese name:	キウイ
Nickname:	Square Sisters

Mozu and Kiwi, also known as the Square Sisters, due to their square-like hairstyle, are very loyal to Franky, and go with him everywhere. Kiwi is the sister with the red top, red bikini bottom, and curly edged hair.

http://onepiece.wikia.com/wiki/Mozu_and_Kiwi